have started this kind of industrial sabotage and the real motive behind it. jennifer griffin is live for us at the pentagon. what do we know about the virus and where it might have come from? >> reporter: what we know is that it's called stuxnet, it's a real tongue twister. what we now from the security firm is that 60% of the attacks by this worm have taken police inside iran. iranian officials are now saying that their nuclear facility, the one built by the russians has had technical difficulties as a result of this worm and we know that some of the centrifuges at the main facility in iran where they are enriching highly enriched uranium, it has been slowed down. the begs the question, jon, who is behind this cyber attack. it is a cyber attack. it is likely something that was embedded inc into software and t software, yes semens which is a german company sold a lot of software to the iranians that is used in the nuclear program. the question is, was it germany behind it, israel or was it the united states. the united states has a very sophisticated cyber command out at fort meade.